US4634817A - Trolley pole raising and lowering apparatus - Google Patents

Trolley pole raising and lowering apparatus Download PDF

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Publication number
US4634817A
US4634817A US06/792,889 US79288985A US4634817A US 4634817 A US4634817 A US 4634817A US 79288985 A US79288985 A US 79288985A US 4634817 A US4634817 A US 4634817A
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US
United States
Prior art keywords
support structure
pole
collar
plate
actuator
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US06/792,889
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English (en)
Inventor
Thomas W. Griffiths
Vladimir Suris
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
OB TRANSIT PRODUCTS Inc A CORP OF TX
Original Assignee
Harvey Hubbell Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Harvey Hubbell Inc filed Critical Harvey Hubbell Inc
Assigned to HARVEY HUBBELL INCORPORATED, 584 DERBY MILFORD ROAD, NEW HAVEN, CONNECTICUT, A CORP. OF CT. reassignment HARVEY HUBBELL INCORPORATED, 584 DERBY MILFORD ROAD, NEW HAVEN, CONNECTICUT, A CORP. OF CT. ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: GRIFFITHS, THOMAS W., SURIS, VLADIMIR
Priority to US06/792,889 priority Critical patent/US4634817A/en
Priority to CA000511697A priority patent/CA1258105A/en
Priority to MX3055A priority patent/MX161168A/es
Priority to EP86305597A priority patent/EP0224983B1/en
Priority to GB8617771A priority patent/GB2182293B/en
Priority to AT86305597T priority patent/ATE83712T1/de
Priority to DE8686305597T priority patent/DE3687343T2/de
Priority to BR8603610A priority patent/BR8603610A/pt
Publication of US4634817A publication Critical patent/US4634817A/en
Application granted granted Critical
Assigned to HUBBELL INCORPORATED reassignment HUBBELL INCORPORATED CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). EFFECTIVE DATE MAY 9, 1986 Assignors: HARVEY HUBBELL, INCORPORATED
Assigned to OB PRODUCTS, INC. reassignment OB PRODUCTS, INC. ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: HUBBELL INCORPORATED
Assigned to OB TRANSIT PRODUCTS, INC., A CORP. OF TX. reassignment OB TRANSIT PRODUCTS, INC., A CORP. OF TX. ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: OB PRODUCTS, INC.,
Assigned to LLOYDS BANK PLC, PITTSBURGH BRANCH reassignment LLOYDS BANK PLC, PITTSBURGH BRANCH SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: OHIO BRASS COMPANY, THE
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L5/00—Current collectors for power supply lines of electrically-propelled vehicles
    • B60L5/04—Current collectors for power supply lines of electrically-propelled vehicles using rollers or sliding shoes in contact with trolley wire
    • B60L5/12—Structural features of poles or their bases
    • B60L5/16—Devices for lifting and resetting the collector
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/72—Electric energy management in electromobility

Definitions

  • This invention relates to an improved apparatus for controlling the movement of a trolley pole into and out of contact with an overhead wire and for the positioning of the pole when it is partly or fully lowered.
  • an object of this invention is to provide an apparatus for controlling the lowering of a trolley pole to a safe, centered stowed position and to keep the pole centered when it is lowered, despite forces tending to move the pole from side to side.
  • a further object is to provide such as apparatus which is usable to elevate and guide the pole to its operating position.
  • Another object is to provide a pivot mechanism driven by a light-weight actuator for raising and lowering the pole.
  • a still further object is to provide a simple and reliable control circuit for operating the actuator.
  • Yet another object is to provide such an apparatus which accomplishes the function of lowering and stowing the pole without further extension of the trolley base springs, thereby prolonging the life of those springs.
  • the invention includes a current collector apparatus comprising the combination of a base plate mountable on a vehicle, a trolley pole support structure pivotably mounted on the base plate for pivotal movement about a substantially horizontal axis, and a trolley pole pivotably mounted on the support structure for movement about a second substantially horizontal axis.
  • Springs means are coupled between the support structure and the pole for urging the pole toward a raised position.
  • An actuator is mounted on the base plate and has an extendable arm connected to the support structure for pivoting the support structure about the first horizontal axis between an upright position and a tilted, stowed position.
  • Control means is provided for selectively energizing the actuator to extend or retract the arm.
  • the apparatus also preferably includes a centering mechanism including a collar forming part of the support structure, the collar being rotatable about a generally vertical axis and having a recess which faces radially away from its axis of rotation.
  • a latch member is pivotably mounted on the support structure and extends below the recess when the support structure is in its upright position so that, when the support structure is tilted away from the full upright position the latch member enters the recess and substantially prevents rotation of the collar.
  • FIG. 1 is a partially foreshortened side elevation of a portion of a vehicle with an apparatus in accordance with the invention mounted thereon;
  • FIG. 2 is a partial top plan view of the pole elevating and lowering apparatus of FIG. 1;
  • FIG. 3 is a side elevation of the apparatus of FIG. 2 with the mechanism in the lowered, stowed position;
  • FIG. 4 is a perspective, partly sectional view of the latch mechanism portion of the apparatus
  • FIG. 5 is a transverse sectional view along line 5--5 of FIG. 2;
  • FIG. 6 is a schematic electrical circuit diagram of a control circuit for operating the apparatus of FIGS. 1-5.
  • a trolley pole 10 is mounted on a vehicle 12 by a raising and lowering support mechanism indicated generally at 14.
  • Pole 10 is conventional in that it is an elongated, substantially rigid member having a degree of flexibility so as to suitably support a current collector at the distal end thereof in a position to contact an overhead wire, in a manner well known in this art, so as to act as a current collector.
  • the harp and the associated current-carrying wires are omitted from the figures herein because they are fully conventional and because their omission simplifies the illustrations.
  • a cable 15 is connected to an intermediate point on the pole and leads to a retracting mechanism 17 which accepts cable as the pole is lowered, the cable and retractor acting to maintain proper conditions concerning the relationship of the harp to the overhead wire under normal operating circumstances.
  • the cable and retractor are fully conventional.
  • the apparatus also includes base springs 18 and 19 which are connected between a location on the pole and a location on the base structure, which will be further described, for the purpose of urging the pole toward its elevated position to keep the current-collecting harp in contact with the overhead wire under normal operating conditions.
  • the springs are connected to opposite ends of a double hook 21 which is attached to an adjusting mechanism 22, this attachment also being conventional in nature.
  • the support mechanism in accordance with the invention includes a base plate 25 which is fixedly attached, as by a plurality of machine screws or bolts, to the upper surface of vehicle 12.
  • Plate 25 is in the shape of an elongated rectangle the longitudinal central axis of which is aligned with the fore-and-aft axis of vehicle 12, i.e., with the direction of motion of the vehicle which is indicated by arrow 26.
  • bracket 28 At the forward end of plate 25 is a bracket 28 having an end plate and triangular side brace plates 29, the plates 29 being rigidly attached to base plate 25 as by welding.
  • Bracket 28 also includes a vertically extending central post 31 with ears 32 at its upper end which have a transverse hole extending therethrough.
  • An actuator indicated generally at 33 includes a gearbox 34, a motor 35 and an elongated actuator arm housing 36 which contains an extendible arm 37, best seen in FIG. 3.
  • Gearbox 34 has a post 39 extending from the forward surface thereof between ears 32, the post having an opening therethrough aligned with the openings in ears 32 to receive a pivot pin 38 so that gearbox 34 is pivotally connected to post 31 and can swing upwardly, as required, and downwardly to a limited extend, the downward motion being limited by limits on the movement of the base structure.
  • Actuator 33 is, in itself, a conventional kind of electrically driven linear actuator which is particularly advantageous for the present apparatus because it is light in weight, has high output force and high efficiency and also is operated using a 12 volt DC reversible motor.
  • An actuator of a suitable type is manufactured by the Warner Electric Brake and Clutch Company of South Beloit, Ill. Such actuators make use of the ball screw type of mechanism as shown in U.S. Pat. Nos. 4,266,437 and 4,286,793. Other forms of actuators can be used.
  • a transversely extending axle 43 which rotatably supports a vertically oriented pivot plate 40.
  • An upwardly extending stop member 41 is fixedly attached to plate 25 and has a central groove with a stop surface, see FIG. 5, which contacts the lower forward edge of pivot plate 40, establishing the forward, operating position of the support structure. Stop 41 also provides lateral support for plate 40 in the operating position and establishes the limit on downward movement of gearbox 34.
  • An upwardly extending link 42 which is pivotally attached to the rear end of extendable arm 37.
  • a horizontal support plate 44 is fixedly attached to pivot plate 40 and supports four sets of insulators 46 which, in turn, support a second generally horizontal support plate 48. Plates 44 and 48 are held in parallel relationship with each other by the interconnected insulators.
  • Plate 48 has a generally circular conical portion 50 in which is fixedly mounted a vertically extending shaft 52 which receives a rotatable collar 54.
  • Collar 54 is provided with a yoke 56 to which the forward ends of springs 18, 19 are attached and also has a rearwardly protruding bracket 58 to which the end of pole 10 is pivotally connected.
  • a normally closed limit switch 69 is attached to base plate 25 in a position such that plate 44 comes in contact with the actuating arm of the limit switch when the pole reaches its elevated position.
  • a circuit for motor 35 is energized through switch 69 so that when the support structure reaches the desired position the switch is opened and the motor is deenergized.
  • a second limit switch 70 is positioned so that its actuator arm is contacted by plate 44 when the support structure reaches the tilted position. Again, when switch 70 is opened, the motor is deenergized and motion is stopped.
  • the apparatus thus far described forms the basic mechanism for lowering pole 10 in the desired manner.
  • actuator 33 When motor 35 is energized, actuator 33 is caused to extend its extendable arm 37, pushing on link 42 and pivoting plate 40 about the axis of axle 43, thereby tilting the support structure including plates 44 and 48, shaft 52 and collar 54 toward the rear of the vehicle, tilting the vertical axis about which collar 54 is rotatable and lowering the pole.
  • Several events occur during this lowering which are of interest.
  • One is that, by tilting the collar and shaft 52, the pole is caused to automatically move to the center position under the force of gravity.
  • a second important benefit is that the lowering is accomplished without further extension of springs 18 and 19 as is common practice.
  • the lowering allows the springs to contract, thereby significantly lengthening the spring life by lowering stress in the springs.
  • the actuator 33 is of a type which resists forces applied to its extendable arm, the structure is essentially locked in the tilted position simply by deenergizing motor 35. Cable 15 is, of course, retracted by retractor 17.
  • pole 10 is centered automatically by the tilting action, it is apparent that the pole would not remain in the center position if subjected to lateral forces by the movement of vehicle 12.
  • a simple but highly effective centering device is therefore provided, this device also performing the important function of guiding the pole in its travel upwardly from the stowed position to the point of harp contact with the trolley wire.
  • the centering structure is shown in FIG. 4 and includes a pair of forwardly protruding ears 60 and 61 which are fixedly attached to collar 54 and extend parallel with each other from that collar, thereby defining a recess.
  • a centering latch arm 62 is pivotally connected to a bracket 64 at the forward end of plate 48, arm 62 having a latch member 63 protruding rearwardly from the pivot point and a balance arm 65 extending forwardly therefrom.
  • Balance arm 65 has a head 67 at the distal end thereof, the lower end of the head having a roller 68 which rests on and rides along the upper surface of actuator arm housing 36.
  • Arm 65 is a rod of electrically nonconductive material such as fiberglass which provides electrical insulation and also serves as a flexible element facilitating unlatching action of the centering device during the upward travel of the pole from the stowed to the operating position.
  • latch member 63 is positioned directly below the recess formed by ears 60 and 61 when the apparatus is in the operating position with pole 10 elevated and plates 44 and 48 in their horizontal positions.
  • collar 54 is free to rotate, permitting pole 10 to swing from side to side as necessary to maintain its current-collecting harp in contact with the overhead wire.
  • latch member 63 is elevated relative to the recess, causing latch member 63 to enter the recess as shown in FIG. 4.
  • the upper surface of latch 63 is prefereably beveled as shown at 63a to perform a camming action and thereby widen its range of engagement with the recess between ears 60 and 61 as those ears swing across above latch member 63 while the pole is being lowererd.
  • the width of latch member 63 is selected to be only slightly smaller than the width of the recess so that as soon as the latch member has entered the recess lateral motion of the pole is restricted to extremely small dimensions, thereby essentially preventing the pole from leaving its center position. In the fully stowed position illustrated in FIG. 3, the latch member remains within the recess, keeping the pole centered as desired.
  • Head 67 and roller 68 can be weighted to allow the centering latch to perform its task simply by the force of gravity. If necessary, arm 65 can, of course, be manually lifted to release the latch and to permit the pole to be moved to one side or the other for service or the like.
  • FIG. 6 schematically illustrates an electrical circuit which is usable to control the operation of the apparatus shown in FIGS. 1-5.
  • the circuit of FIG. 6 illustrates a typical control system used to operate two trolley poles rather than one, the operating mechanisms simply being connected essentially in parallel.
  • the two trolley poles are identified as A and B and the actuators for them are operated by motors 35a and 35b.
  • the schematic diagram of FIG. 6 does not, in most cases, bear any realistic relationship to the physical proximity of the various components.
  • a control panel 75 is available to the operator and includes a manually operable switch indicated generally at 76 which has a grounded movable center contact and two fixed contacts, either one of which can be selectively grounded by the operator.
  • the control panel also includes indicator lights 78 and 79 which inform the operator that power is being applied to both motors in response to closing switch 76 in either direction.
  • the relays in FIG. 6 are shown in their deenergized conditions.
  • the fixed contact on the "up" side of switch 76 is connected through the normally closed “up” limit switch 69a to one terminal of the energizing winding 80 of an electromagnetic relay, the other terminal of that winding being connected to a positive 12 volt DC source.
  • the source is preferably a bank of batteries so that the apparatus can be operated regardless of whether the trolley harp is in contact with a wire or any other source is available.
  • the "up" contact of switch 76 is similarly connected through "up" limit switch 69b to the energizing winding 82 of a relay, the other terminal of which is also connected to the 12 volt source. It will be assumed, for the moment, that the pole is in the down position.
  • limit switches 70a and 70b are open while limit switches 69a and 69b are closed which would be the proper condition with the pole in its down position.
  • Each of relays 80, 82, 84 and 86 operates a single-pole, double-throw set of contacts with the normally closed contacts being connected to ground and the normally open contacts being connected to the 12 volt DC source.
  • the movable contacts of the relays are connected to the motor, the movable contact of relay 80 being connected to one side of motor 35a and the movable contact of relay 84 being connected to the other side of that same motor.
  • the movable contacts of relay 82 and 86 are connected respectively to the opposite sides of motor 35b.
  • light 78 is connected in parallel with motor 35b while light 79 is connected in parallel with motor 35a.
  • switch 79 When switch 79 is moved to its "up" position, one side of relay winding 80 and one side of relay winding 82 are grounded, thus energizing those relays and moving their respective contacts to the opposite position. This applies 12 volts to one side of each of the motors, causing the motors to move in the proper direction to operate their respective actuators for the purpose of elevating the poles. As soon as the support structures have moved a sufficient amount, switches 70A and 70B are closed but this has no effect since the movable contact of switch 76 is in the "up” position. When the pole has reached its operating position, equivalent to that shown in FIG.
  • switches 69a and 69b are opened, removing the ground from energizing windings 80 and 82, thus deenergizing those windings and stopping the operation of motors 35a and 35b.
  • the circuit is then returned to the condition illustrated in FIG. 6 except for the positions of the limit switches which are opposite to those shown. Moving switch 76 to the "down" position thus energizes relays 84 and 86 by grounding one side of each energizing winding, thus applying 12 volts to the opposite sides of motors 35a and 35b, causing them to rotate in the reverse direction, thereby extending the actuator arms and tilting the support structures until they reach the position shown in FIG. 3.
  • the limit switches are then returned to the positions shown in FIG. 6 and the circuits are deenergized.
  • lamps 78 and 79 are energized whenever the motors are energized, regardless of polarity.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Current-Collector Devices For Electrically Propelled Vehicles (AREA)
  • Load-Engaging Elements For Cranes (AREA)
  • Carriers, Traveling Bodies, And Overhead Traveling Cranes (AREA)
  • Forklifts And Lifting Vehicles (AREA)
  • Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
  • Sawing (AREA)
  • Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
  • Protection Of Plants (AREA)
  • Rehabilitation Tools (AREA)
US06/792,889 1985-10-30 1985-10-30 Trolley pole raising and lowering apparatus Expired - Lifetime US4634817A (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
US06/792,889 US4634817A (en) 1985-10-30 1985-10-30 Trolley pole raising and lowering apparatus
CA000511697A CA1258105A (en) 1985-10-30 1986-06-16 Trolley pole raising and lowering apparatus
MX3055A MX161168A (es) 1985-10-30 1986-07-08 Mejoras en aparato para controlar el ascenso y descenso de una pertiga de trole sostenida sobre un soporte en un vehiculo
DE8686305597T DE3687343T2 (de) 1985-10-30 1986-07-21 Vorrichtung zum heben und senken einer trolleystange.
GB8617771A GB2182293B (en) 1985-10-30 1986-07-21 Trolley pole raising and lowering apparatus
AT86305597T ATE83712T1 (de) 1985-10-30 1986-07-21 Vorrichtung zum heben und senken einer trolleystange.
EP86305597A EP0224983B1 (en) 1985-10-30 1986-07-21 Trolley pole raising and lowering apparatus
BR8603610A BR8603610A (pt) 1985-10-30 1986-07-30 Aparelho coletor de corrente

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06/792,889 US4634817A (en) 1985-10-30 1985-10-30 Trolley pole raising and lowering apparatus

Publications (1)

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US4634817A true US4634817A (en) 1987-01-06

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Application Number Title Priority Date Filing Date
US06/792,889 Expired - Lifetime US4634817A (en) 1985-10-30 1985-10-30 Trolley pole raising and lowering apparatus

Country Status (8)

Country Link
US (1) US4634817A (es)
EP (1) EP0224983B1 (es)
AT (1) ATE83712T1 (es)
BR (1) BR8603610A (es)
CA (1) CA1258105A (es)
DE (1) DE3687343T2 (es)
GB (1) GB2182293B (es)
MX (1) MX161168A (es)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3931559C1 (en) * 1989-09-22 1991-04-25 Stemmann-Technik Gmbh, 4443 Schuettorf, De Current collector for electrical vehicle e.g. tram - has safety arrangement allowing hand-crank and electromotor to operate lifting spindle separately
US20120037471A1 (en) * 2009-02-24 2012-02-16 Conductix-Wampfler Ag Current collector and energy transmission system
FR3002497A1 (fr) * 2013-02-28 2014-08-29 Faiveley Transp Lekov A S Dispositif pour placer des perches d'un collecteur de trolleybus
CZ304729B6 (cs) * 2013-05-31 2014-09-10 4Rail, A. S. Automatické vystřeďovací zařízení trolejbusového sběrače proudu
CZ304870B6 (cs) * 2013-05-31 2014-12-17 4Rail, A.S. Zařízení k ovládání tyče trolejbusového sběrače proudu
US20150165911A1 (en) * 2012-09-28 2015-06-18 Siemens Aktiengesellschaft Non-track-bound vehicle

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CZ299211B6 (cs) * 2004-05-04 2008-05-21 Lekov, A. S. Zarízení pro sklápení tycí trolejbusového sberace
CZ299140B6 (cs) * 2004-05-04 2008-04-30 Lekov, A. S. Zarízení pro ustavení tycí trolejbusového sberacedo polohy rovnobežné s osou trolejbusu
DE102012002748B4 (de) 2012-02-08 2024-02-22 Libroduct Gmbh & Co. Kg Vorrichtung und Verfahren für das wahlfreie motorische Positionieren von Stangenstromabnehmern eines Oberleitungsfahrzeuges

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US832544A (en) * 1905-11-15 1906-10-02 John R French Automatic trolley-guard.
US1075349A (en) * 1912-10-29 1913-10-14 John Gay Trolley.
US1447217A (en) * 1922-04-05 1923-03-06 Ohio Brass Co Trolley base
FR607554A (fr) * 1925-12-08 1926-07-05 Dispositif de montage perfectionné des perches de trolleys et autres organes similaires des véhicules à traction électrique
US1733073A (en) * 1928-01-23 1929-10-22 Prelesnik Anton Trolley pole
DE611596C (de) * 1929-11-12 1935-04-04 Bbc Brown Boveri & Cie Selbsttaetige Fahrzeugsteuerung
US2117030A (en) * 1937-04-16 1938-05-10 Ohio Brass Co Trolley pole tender
US3547237A (en) * 1968-06-13 1970-12-15 Kenneth H Ives Remotely controlled power pickup for trackless electric vehicles
EP0047819A1 (de) * 1980-09-05 1982-03-24 Messerschmitt-Bölkow-Blohm Gesellschaft mit beschränkter Haftung Zweistufiger Scherenstromabnehmer

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2241149A (en) * 1938-06-09 1941-05-06 Mento Francesco Trolley system for streetcars and other electric cars
DE2903630C2 (de) 1979-01-31 1986-09-25 Warner Electric Brake & Clutch Co., Beloit, Wis. Kugelgewindetrieb
FR2451289A1 (fr) * 1979-03-13 1980-10-10 Transports Commun Ste Lyonnais Dispositif pour la commande a distance de l'abaissement et du relevage des perches d'un trolleybus
EP0030906A1 (fr) * 1979-12-14 1981-06-24 Etablissements André BARDET S.A. (société anonyme) Ensemble de prise de courant à déperchage et reperchage automatiques pour véhicules à traction électrique, notamment les trolleybus
JPS60189126A (ja) 1984-03-07 1985-09-26 株式会社東芝 真空遮断器とその処理方法

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US832544A (en) * 1905-11-15 1906-10-02 John R French Automatic trolley-guard.
US1075349A (en) * 1912-10-29 1913-10-14 John Gay Trolley.
US1447217A (en) * 1922-04-05 1923-03-06 Ohio Brass Co Trolley base
FR607554A (fr) * 1925-12-08 1926-07-05 Dispositif de montage perfectionné des perches de trolleys et autres organes similaires des véhicules à traction électrique
US1733073A (en) * 1928-01-23 1929-10-22 Prelesnik Anton Trolley pole
DE611596C (de) * 1929-11-12 1935-04-04 Bbc Brown Boveri & Cie Selbsttaetige Fahrzeugsteuerung
US2117030A (en) * 1937-04-16 1938-05-10 Ohio Brass Co Trolley pole tender
US3547237A (en) * 1968-06-13 1970-12-15 Kenneth H Ives Remotely controlled power pickup for trackless electric vehicles
EP0047819A1 (de) * 1980-09-05 1982-03-24 Messerschmitt-Bölkow-Blohm Gesellschaft mit beschränkter Haftung Zweistufiger Scherenstromabnehmer

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3931559C1 (en) * 1989-09-22 1991-04-25 Stemmann-Technik Gmbh, 4443 Schuettorf, De Current collector for electrical vehicle e.g. tram - has safety arrangement allowing hand-crank and electromotor to operate lifting spindle separately
US20120037471A1 (en) * 2009-02-24 2012-02-16 Conductix-Wampfler Ag Current collector and energy transmission system
US8915341B2 (en) * 2009-02-24 2014-12-23 Conductix-Wampfler Gmbh Current collector and energy transmission system
US20150165911A1 (en) * 2012-09-28 2015-06-18 Siemens Aktiengesellschaft Non-track-bound vehicle
US9381818B2 (en) * 2012-09-28 2016-07-05 Siemens Aktiengesellschaft Non-track-bound vehicle
FR3002497A1 (fr) * 2013-02-28 2014-08-29 Faiveley Transp Lekov A S Dispositif pour placer des perches d'un collecteur de trolleybus
CZ304729B6 (cs) * 2013-05-31 2014-09-10 4Rail, A. S. Automatické vystřeďovací zařízení trolejbusového sběrače proudu
CZ304870B6 (cs) * 2013-05-31 2014-12-17 4Rail, A.S. Zařízení k ovládání tyče trolejbusového sběrače proudu

Also Published As

Publication number Publication date
ATE83712T1 (de) 1993-01-15
CA1258105A (en) 1989-08-01
DE3687343T2 (de) 1993-07-08
BR8603610A (pt) 1987-06-02
EP0224983B1 (en) 1992-12-23
MX161168A (es) 1990-08-10
EP0224983A3 (en) 1988-11-02
GB2182293B (en) 1989-10-11
DE3687343D1 (de) 1993-02-04
EP0224983A2 (en) 1987-06-10
GB8617771D0 (en) 1986-08-28
GB2182293A (en) 1987-05-13

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